Hi Alan,
> Index: usb-2.6/drivers/usb/host/isp116x-hcd.c
> ===================================================================
> --- usb-2.6.orig/drivers/usb/host/isp116x-hcd.c
> +++ usb-2.6/drivers/usb/host/isp116x-hcd.c
> @@ -583,12 +583,15 @@ static void
> finish_atl_transfers(struct
> unpack_fifo(isp116x);
> postproc_atl_queue(isp116x);
I think it is guaranteed that at this point all the ep's in
active ATL queue have their urb_list non-empty. There's a
relevant BUG_ON() in postproc_atl_queue(). The list_empty()
check below would be unnecessary.
> for (ep = isp116x->atl_active; ep; ep = ep->active)
> {
> + if (list_empty(&ep->hep->urb_list))
> + continue;
> urb =
> container_of(ep->hep->urb_list.next,
> struct urb, urb_list);
> +
> /* USB_PID_ACK check here avoids finishing of
> control transfers, for which TD_DATAUNDERRUN
> occured, while URB_SHORT_NOT_OK was set */
> - if (urb && urb->status != -EINPROGRESS
^^^
Yes, this is wrong. Thanks. As you are already at it, please
remove it.
> + if (urb->status != -EINPROGRESS
> && ep->nextpid != USB_PID_ACK)
> finish_request(isp116x, ep, urb);
> }
Olav
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